| Nameserver | IP addresses | PTR | ASN / ISP |
|---|---|---|---|
| ns.semaphor.dk | 195.190.25.50 | ns.semaphor.dk | AS201697 Semaphor |
| ns2.semaphor.dk | 85.235.240.108 | ns2.semaphor.dk | AS3308 Norlys Digital A/S |
| IP | TTL | PTR | ASN | ISP / Org | CIDR | Country | City |
|---|---|---|---|---|---|---|---|
| 45.156.8.54 | 38400s | hjulben4.semaphor.dk | AS201697 | Semaphor | 45.156.8.0/22 | 🇩🇰 Denmark | — |
| TXT Record |
|---|
| v=spf1 include:_spf.semaphor.dk -all |
| Policy | Record (classroomplus.dk) |
|---|---|
| -all (hard fail) | v=spf1 include:_spf.semaphor.dk -all |
| Policy | Record (_dmarc.classroomplus.dk) |
|---|---|
| p=quarantine | v=DMARC1; p=quarantine |
| Type | Name | Value |
|---|---|---|
| CNAME | _acme-challenge.classroomplus.dk | classroomplus.dk.acme.semaphor.dk |
| Check | Result |
|---|---|
| Validation Status | 🔓 Insecure |
| AD Flag (resolver validates) | ✗ Not set |
| DS Record | ✗ Not found |
| DNSKEY Record | ✗ Not found |
| Flags | unsigned answer |
| Field | Value |
|---|---|
| Serial | 2025082700 |
| Primary NS (MNAME) | ns.semaphor.dk |
| Responsible (RNAME) | hostmaster@semaphor.dk |
| Refresh | 3600s |
| Retry | 3600s |
| Expire | 2419200s |
| Minimum (neg-cache TTL) | 38400s |